/**
 * #      1630
 * 名称   等差子数组
 * 链接   https://leetcode-cn.com/problems/arithmetic-subarrays
 * 题解   [90](https://leetcode-cn.com/problems/arithmetic-subarrays/solution)
 * 通过率 77.1%
 * 难道   中等
 */

